Type-writing machine.



BQC.STICKNEY.

TYPE WRITING MACHINE.

APPLICATION FILED JULY 6. 1911..

m1 Patented Jan 12,1915.

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T aZ-Z whom it may cancers:

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ASSIGEGE' "LQ ULTDERWGWD TYPE'WEITEB COT/KEANE. 533 NEW 3304x1 1, N.32"., A CDRPGR- 31s 3 DELAVVAE-E TYPE-'WHITENE: ACHIE E,

Be it lrncwn that l, C Mir, a citizen or the United Sm te in Elizabeth,in the county of Lin. Sis-ts of New Jersey, have invented new and usefulImprovements in Type .lVritinq Machines, of which the following is aspeci cation.

This invention relates to means for releasing the platens from ill-eline-space Wheels of i igewriting machines.

One object of the invention is to make a secure connecticn between theline-space wheel and the pla'ren, so thee the platen will not eitheroverthrow or underr-hrow when the usual line-spacing lever is violentlyectusited. and sofas to render the machine more reliable under all otherconditions; While permitting easy disconnection. of the platen.

Another object to secure these results by inexpensive, comp-act anddurable mechanism.

Another object is to construct a device which can be readily applied toexisting mechines.

The accompanying drawings show the preferred form of .my invention. insaid form, an internal gear is secured to the linespace wheei, and anarm fixed to tie axle to which the platen is also fixed or coiinecied.This arm carries a pinion which meshes with said gear. I also provide aloose movableaboutthe platen axis independently of the platcnend linespace Wheel, and herring a pinion to mesh with said internal gear. Toeach of these pinions is fixed rat-ch22 er toothed Wheel; a spring holdsthese ratohets in mesh, and they lock together and cooperate with,seidpiriioiis and gear to preventrelative, movement of she pistes andline-spece wheel. A nectcd to'meens for separating the rstchets at will.so that the platen may be rotated independently of the linespeoe wheel:and said spring thereafter returns the. hei, Wheels into engagement witheach 1 2. thus reconnecting the platen "r-o the li space wheel.illustrate also a second icr arm, also carrying a pinion in mesh i saidinternal gear and provided Mil ratchet. Said Zillll which is fixed to rie plat-en stale occupies a position -.ceiween the two loose 21 hid thesame spring opcrates on the t arms tc hold their ratehets is: mesh theratchet device as finger piece is can ey prevents rela e shakeihespleter, and line space Wheel 4L CilifiCACIl, Whiie the other i @1178relative movement there direction; so that there can be no lose motionbetween the platen line space Wl eel. e":

time.

(Ether objects edvenieges 'wiil. after appear. In she eccompsnyisgFigure '3 18 3. side elevation of one end cf a 312L371 frame, showingthe line space illustrating improvemeni-s Fig; 2 is an eievetioii. permeross-secibioii. she line i onnected parts. Fig. 0

space wheel is longitedinai @011 cf the iri'vension. ig; e: is serctiveview er the releasing lever. Fl. an enlarged diagram is iii is ear andthe interlocking rsieheis. is e sectional end View, showing releesinlever and easing which ineloses she The usual cylindrical plaierr 3. :2pin 2 upon axle 3, which is jo the usual menrier in the ends *2 orframe, and projects beyond said eiid carries each end a platen axle.Loose upon. ti e a linespace wheel 6, having 1 line space H1186]. isheld in so by e. detent 8, and is operefied rnecheiiisiii includisg iFixed upon the line space W1 *2 a mile: internal 1G, sear d flange ll,which projecrs the line space Wheel. Fixed 'tr axle 3 is'the hub 12 ofarm is, free end of which is pivsied ev goision 14%,

meshing closely with the 10L upon she platen axle 3 15 im- 15, serrying18 also in mesh Witrrrhe 10.

's e etcle Whee 0. These resciiet wheels slim if} rormed, but the teethe11 one raichsi oppesitely from. these an the 1 Fixed to the pinion .s 1

recs-nerwneeis 21 and 22,. W

yis.

' loose arm 17; said extensions being preferably below the platen axle3, or upon the opposite side of said axle from the pinions, forcompactness.

To release the platen from the line-space wheel, a button 26 is pressedtoward the right at F 1 or said button mounted :upon the ends of a pairof stems 27, extending through perforations in the knob 5, and at theirinner ends connected to a disk or plate 28, having a hub 29. whereby itis slidable along the platen axle This disk is pressed against and movesa shoulder 30, formed upon a lever 31 of the third order; one end of thelever forked at 32 to bestride the platen axle, and pivoted at Fig. 6,to the arm 13. At its lower end the lever has a finger 34-, with abeveled or pointed tip whir works between the ends of the extensions and25, and cams them apart, thereby swinging the arms and 17 away from thearm 13, and releasing all the ratehets. The platen may now be rotated tobring any point thereof to the line of writing, while the line space\vheelis held stationary by the detent 8. Upon releasing the fingerpiece 24" the spring 23 restores the arms 15 and 17, and also returnsthe finger piece 26 to normal position. The ratchets are again broughtinto mesh, as at Figs. 2 and 5, and hence the line space wheel ispositively secured to the platen.

It will be seen at Fig. 5 that if it be attempted to rotate the platenand the arm 13 in a direction to carry the pinion 14 bodily to theright, said pinion will tend to rotate upon its own axis, because of itsconnection with the gear 10: and the teeth of ratchet 22, which are inengagement with the teeth of rat het 20, tend to turn the latter towardthe right. this tendency being however resisted by rr son of theengagement of the pinion 18 (t d to 20) and the stationary gear 10.

are shaped to rig- Thc lil'l'llfh t eth '20, 2f. idlv lockin, onedirection, that is, posilively prcvrnts from turning, as aforesaid. andhence the arm is prcvcnted from" swing" in one direction around the axle.uf. the .a i time. the ratchet 1:). bv reason of the cngagr znent of 16with 10, prevents $5.! from turning in the opposite direction;

the i rh of ll bcing dircctlv set to posiw y V I I tivcl men 2] fromturning in such direction. llcncc the to the r ch? nor mains stat curcdby m ratchet teeth arm 13 can budge neither to the left while gear 10-rev This locking effect is scill! engag ng faces of the runial. orslightly hooked.

The inclined ac-1:2 oi the ratchet teeth intermesh of coin'se, but arenot relied upon to effect positive interlocking of the members, becauseof their obliquity.

The ratchets 19, 20, 21 and 22 are prefer- 7o ably made of largerdiameter than their pinions, so that the peripheral dimension f eachratchet is greater than that of its pmions, and hence there is lessliability of faulty rengagemcnt of the ratchets after their release,while the ratchetteeth may be made finer and more numerous without male"ing the structure unduly weak for its purpose. By making the teeth fine,the liability of catching of the tips or points of one set of ratchetteeth upon those of another at the release of the finger piece 26 isminimized or avoided.

The releasing lever 31 is provided with a dead or dwell surface or edge36 adjacent to the opposite cams 35; sai

dwell surface being intended to engage the ends of the extensions ofarms 24 and 25 and hold them apart mechanically, so that the operator,by

first pressing the button in as far as it will go, may use both hands ifdesired in adjust ing the platen and the work sheet; while uponsubsequently pulling out the button, the disk 28 will engage a hook 37on said lever 31, andpull the same up to normal 3. If the operator doesnotatt;

position, Fig. want to lock the arms apart, he will notpress the buttonin so far.

ther variations maybe resorted to within the-scope of the invention; andother means may be provided for releasing the platen from the line spacewheel. I believe it to be broadly new to use a train of three or moregears or toothed wheels which look one another against rotation andplaten to the line space wheel, with provision for separating themembers of said train so as to permit independent rotation of theplaten. Other novel features will be pointed out in the claims. 1

Having thus described claim: 1

1. The combination with a platen and). line-space wheel, of a connectingtrain inmy invention, I

eluding a gear secured or connected to said 11 wheel, intermeshingrotary devices also meshing with said gear, one of said rotary devicespivoted upon an arm or member connected to the platen, a spring to holdhence lock the said intermeshing devices together to con- 12o nect theplaten to the line-space wheel, and a. linger-piece having means toseparate'said rotary devices in any rotative position of the platen topermit the platen to be rotated independently of the line-space wheel.

2. The combination with a platen and a linespace wheel, of a connectingtrain including a gear secured or connected to said wheel, pinionsmeshing with said gear, one of said pinions pivoted upon a memberconeluding a nected to the platen, a device connected to each pinion torotate therewith, a spring to hold said rotary devices in engagement toconnect the platen to the line-space'nheel, and a finger-piece havingmeans to separate said rotary devices to permit the platen to be rotatedindependently of the linespace vheel.

3. The comhination vvith a platen and a line-space Wheel, of aconnectingtrain ingear-secured or connected to said Wheel, pinion ineshing ivithrear and pivoted upon a member connected to the platen, a device fixedto said pini on to rotate therewith, a pair of pinions also meshing withsaid gear,.and each having a device to rotate therewith and also toengage the first mentioned rotary devicefor connecting the Wheel, andmeans operated by said tensional means to hold said pair of rotarydevices in engagement with the first-mentioned r0 tary device, means forseparating said rotary devices, to permit the platen to he rotatedindependently of thelinespace wheel, and means operatcd..=l y saidtensional means to release said separating means.

4. The combination with a platen and a line-space Wheel, of a connectingtrain including a gear secured or connected to said Wheel, a pinionmeshing with. said gear and pivoted upon an arm or device connected tosaid platen, a device fixed to said pinion to rotate therewith, a pairof pinions also meshing with said gear, and each having a device torotate therewith and also to enthc firstonentioned rotary device, forconnecting the platen to the line-space Wheel, tensioimlnieans to holdsaid pair of rotary de ices in engagement with tho first-mentionedrotary device, means for separating said rotary dcviccsto permit theplaten to he rotated independently oi the lino-space wheel, and meansoperated by said tensional means to release said separating means, provision heing made for mechanically holding the rotary devices apart, torelieve the operator of the necessity of holding the releasing huttonincli'ectivc position.

The conihination with a platen, of a line-space Wheel for said platen,and a lanetary gear lock controllahlc in any rotative. position of theplaten. for securing said platen and said line-space \vhcclzi'gaii..-.'t rcl ativc rotation.

*3, The combination with :i platen, ol'" a inespace wheel for saidplaten. a planetary lock for securing said plat n and said rv-spaceWheel against relative rotation, nd means oi' releasing said planetarygear och in any rotctive position'of the platen to erniit relativerotation between said laten and said Wheel.

The combination with a platen, of a ne-space Wheel for said platen, alocking ear rolling relatively to said Wheel to enprm'entimc a saw ablea relative movement bBtWEll said platen and said line-space vvhccl. and

able locking means operative in any rotative position of the platen forpreventing the rolling of said gear and thereby pr venting a relativemovement hctween saitl platen and said \vheel.

8. The combination with a platen, of a line-space wheel for saidplaten,:1 gear rolling relatively to said wheel and swinging with the rotationof said platen in a circular orbit concentric with the axis of both saidplaten and wheel to enable a relative rotation between said platen andsaid lino space Wheel, and relcasa lle locking means movahlc with saidplaten for preventing the rolling of said gear and thus preventing arelative rotation hetwcen said platen and said linespace Wheel.

9. The combination with aplaten, of a line-space Wheel for said platen,a member moved by a relative movement of said platen and said line-spaceWheel, locking means to (co-act with said member for preventing arelative movement of said platen and said WllCEl by a movement in onedirection, look:

ing means to co, act with said member for relative movement of saidplaten and said line space Wheel by a movement in the oppositedirection, and releasing means common to both said locking means arianeed to concomitantly release both said locking means to enable arelative rotation of said platen and line-space Wheel.

10. The combination with a. platen, of a line-space Wheel for saidplaten, a plurality ol members rolling relatively to both said parts toenable a relative movement between said parts and ar anged to interlockto prevent a relative movement between said parts, and releasing: meansmovable with the platen for disengaging said members to cnalole the treerolling thcrcol, and thus to cnahle a tree rotation oi the platenrelatively to said line space Wheel.

11. The comhination with a platen, of a linesy ace wheel forsaiilplaten, a plurality oi memhcrs rolling relatively to both said parts toenahlc :1 relative movement hetween said parts and arrang d to interlockto prevent :1 relative movmncnt hctwecn said parts, and releasing meansmovahle with platen l'or disengaging said mcmhm's to enable the freerolling tl A and thus to enable a Free rotation oi the platen relativelyto said dine-space wheel: said releasing: means being arranged to stayset when manipulateiil to one position or the other.

12. The combination with a platen and a ratchet Wheel rotatahlcrelatively thereto, of a tr; in of devices releasaldy connecting saidplaten and ratchet wheel, said train comprising gear, a pinion n'iesliing with said gear and pivoted upon an arm or device, ratchet wheels fixedto said pinion, pair of pinions also meshing with said gear and mountedupon arms Which are pivoted to swing about the platen axis independentlyof each other and of said platen andratchet Wheel, a pair of ratchets,one fixed to each of said pair of pinions to engage the ratchets whichare fixed to the first pinion, a spring to bring the ratchets into mesh,and a fingerpiece to release the ratchets, to permit rotation of theplaten independently of the linespace Wheel.

13. The combination with a platen and a ratchet wheel rotatablerelatively thereto. of

a train of devices releasably connecting said platen and ratchet wheel,said train comprising an internal gear, a pinion meshing with said gearand pivoted upon an arm or device. ratchet wheels fixed to said pinion,

apair of pinions also meshing with said internal gear and mounted uponarms which are revoluhle about the platen axis independently of eachother and of said platen and ratchet Wheel. a, pair of ratchets, onefixed to each of said pair of pinions. to engage the ratchets which arefixed to the first pinion, a. spring to bring the ratchets into mesh. acam lever to release the ratchets. to permit rotationof the platenindependently of the line-space Wheel, and a finger-piece to operatesaid cam lever, the latter having a dwell portion to hold saidpinion-carrying arms mechanically in abnormal positions.

14. The combination with a platen and a line-space wheel, of a train ofgears connecting said platen and wheel, and a gear movable into and outof position. to lock said train. in any rotative position of saidplaten.

15. In a typewriting machine, the combination of a platen and line-spaceWheel. a train of gears connecting said parts, and a locking elementmovable into and out of position to lock said train. in any rotativeposition of said platen.

16. The combination of a platen and a line-space wheel having a commonaxis of rotation, an annular gear secured to said wheel and havinginternal gear teeth a co operating pinion carried by said platen andlocated between said axis and the annular gear. and a locking elementmovable into and out of position in any rotative position.

of the platen. to lock said pinion and annular gear against relativemovement.

17. The combination oi a platen and :1

5s line-space wheel rotatable relatively thereto.

a. train of gears connecting said platen and wheel. a locking memberoperable to lock the train of gears against movement in one direction.and a second element to lock said train against movement in the oppositedirection. v

18. The combination with a platen and a line-space Wheel rotatablerelatively thereto.

'01: a gear carried by said wheel. intermeshing rotary devices alsomeshing-with. said gear, one of said rotary devices being pivot-v edupon a member connected said platen, means to hold said intermcshingdevices together to connect the platen to the line-space Wheel in anyrelative position of adiust- 2o ment of the platen and the line-spaceheel, and a finger-piece having means to separate said rotary devices topermit the platen to be rotated independently of the line-space wheel.I5

19. The combination with a. platen and a line-space wheel. of aconnecting train including a gear connected to said vvheel, pinionsmeshing with said gear. oneiof said pinions being pivoted upon a membercongo ncctcd with said platen, a device connected. to ca'ch pinion torotate therewith, elastic means to hold said rotary devices inengagement and thereby connect the platen and line-space wheel in anyrelative posi- 35 fion of adjustment. and a i mgenpiece having means toseparate said rotary devices to permit the platen to be rotatedindependently of the line-space wheel.

20. The combination with a platen and a so line-space wheel, of aconnecting train inrluding a gear connected to said Wheel, a

pinion meshing with said gear and pivoted upon a member connected withsaid platen, a device fixed to said pinion to rotate there as with, apair of pinions also meshing with said gear and each having a device torotate therewith and also to engage the firstmcntioncd rotary device,said devices being operable to connect the platen and linewe space wheelin any position in which the line-space wheel may be held, meansincluding a spring to hold. said pair of rotary devices in engagementwith the first-mentioned rothry devices. and means for separating saidrotary devices to permit the platen to be rotated independently of theline-space wheel, said spring also serving to return. said separatingmeans.

fl. "he combination with a platen, of a lino-space wheel, a locking gearrolling relatively to said platen to enable a. relative movement betweenthe platen and line-space wheel. and releasable locking means to preventthe rolling of said gear and thereby lock the platen to the linc-spaceWheel in an position of adjustment of the latter.

The combination with a platen of a linr-space wheel therefor, aconnecting train including a gear rolling relatively to said wheel andswinging with the rotation oi said platen ir a circular orbit concehtrirwith the axis of both said platen and whee to enable a relative rotationbetween th: platen and line-space wheel. and releasabl 5. locking meansfor preventing said rollinzi of the gear, said locking means beingoperable at any point in said swinging move ment. thereby preventingrotation between the platen and the line-space Wheel. 13o

meiosis Telling relatively said relative movemem ee- '11; mieel andarr-s nged ieei therefor, coiiiie roiiine" e a reie't i e mo emen' v.ii'lieei and 7 18 33 8333 a 8L re move .i aad ii'i'leei from re: ion 0which they may be broi qgiii esli; for cliaengaglig ssici I t-iieieofazliliOD be-- and. line-space Wlieei, seiei sing arranged to stay set1386. to one posit-i021 or the lilljina'illflf. wih a platen and e"lie-e1, of a iiiii oi conem and Wheel, a gear posiaion Io loci: said. ii position of said platen e iiirsugh means movable W1 n said 'ngmachine,

pisten line/space eoiirieo ation of e plat 2556i 2 90111311011 am {ibeing adapted to be we. iii 0i angular adjiistnieiitto seiii Wheel andeetii, a eoiipeieting Dla'ten bets. en said gear, em a locking eleieansmovable Wifll' 01 position to iooiz 5G QEIIGRE H1 blilz'iiiiOli with aplaten and. a liiie-spece means to hold the iinespece Wheel 051 ions 01:ustment, a. tram "1 me platen into and. out ii to loci: seii train forany posi- "jusiinentv oi? the line-space Wheel. v it-iiig machine, thecombistioii of {1 platen, a line-space wheel, e denr, engaging saidwheel and adapted to various positions oi adjustment, a vin DIconnecting the platen and space Wheel, 21116. loelzieg element lntlj: ofthe "position of "eel into and out of looking through means movnizciiine, the combi- SDaCe Wheel, :1 coneiiniilar gear oerion eeriieci b};said. iie annular gear a said gear, interseicl pinions, and r movingsaid interlocking devices I n. and meshing Second pinion in me *1 etypewriting machine, the combiition of a iaien, a linespaee Wheel, aeonstain including an annular gear oaraicl 'lieel, a pinion carried bysaid l-"ten and Iiiesiiing with the annular gear, second. pinion in meshwith said gear. i-

- oking devices carried by said. pinions,

o -ezuis for moving said ii coking (1e- Qoio ova (iii 2 engageiniiez'ieiidentiy o1 relative position and line-space whee peivriting machinethe combilaien, a ilDQSPfiCQ wheel. a con- 2 .ting i ai i including an.annular gear can 1 lieel, a ea ed by said Z'liEd by seici pimons andoperable gement of said. pinions. ting machine, the 00mine trainincluding an annular gear carsiiici Wheei, 2i pinion carried by said 1with said gear, a second said gear and movable Psi pinion, and

nesting i'ieci lo}; pleieq and r sh ng o pinion meshin' Wii zownid endfrom said ii ii'ienns carrier niiel Anions against roisti if hoe pinionsiogether. The combination with a platen and e @SCQ lVi'MELi ofaiiiiitermeoliate train, mg elements oon ieoeci so said train and rnieiliii mesh to opemtively engage both platen and i'iieei for unified.movemena Leaf m zi i on without piziions to lock the pinion, s "ipinions meshthe annular' gear. and lookinglocking elements, forreleasing said locking elements, whereby the platen may be rotatedeither separately or for line-space movement. 36. The combination with aplaten and a 5 line-space Wheel, of releasable clutching mechanismconnecting them and including a gear, pinions running in mesh with saidgear, engaging wheels connected to said pinions, means to hold saidengaging wheels in v10 contact with each other, and a finger-piece toseparate said engaging wheels.

37. The combination with a platen and a line-space wheel, of releasableclutching mechanism connecting them and including a gear, pinionsrunning in mesh with said gear, engaging wheels connected to saidpinions, means to hold said engaging wheels in contact with each other,and a finger-piece to separate said engaging wheels, the diameter ofsaid engaging wheels being greater than the diameter of the pinions.

38. The combination with a platen and a. line-space wheel, of releasableclutching mechanism connecting them and including a gear, pinionsrunning in mesh with said gear includingan intermediate pinion and apinion at opposite sides thereof, engaging wheels connected to saidpinions and having the same relative arrangement as the pinions, meansto hold the side engaging wheels in contact with the intermediateengaging wheel, and a finger-piece to separate said engaging wheels.

39. The combination with a platen and a 86 line-space wheel, ofreleasable clutching mechanism connecting them and including a gear,pinions running in mesh with said gear including an intermediatepinion'and a pinion at opposite sides thereof, engaging 40 wheelsconnected to said pinions and having the same relative arrangement asthe pinions, means to hold the side engaging wheels in contact with theintermediate engaging wheel, and a finger-piece to separate saidengaging wheels, the diameter of said engaging wheels being greater thanthe diameter of the pinions.

40. The combination with a platen and a line-space wheel, of aconnecting train comprising a gear concentric with the platen axle andpinions eccentric to said axle, and a clutch composed of engaging wheelsrespectively carried by said pinions and movable therewith into and outof clutch engagement.

i 41. The combination with a platen and a line-space wheel, of aconnecting train comprising a gear concentric with the platen 'axle andpinions eccentric to said axle, one

0 of said pinions being movable with the platen, and a clutch composedof engaging wheels respectively carried by said pimons and movabletherewith into and out of clutch engagement.

4:2. The combination with a platen and a line-space wheel, of aconnecting train comprising a gear concentric with the platen axle andpinions eccentric to said axle, a clutch composed of engaging Wheelsrespectively carried by said pinions and movable therewith into and outof clutch engagement, means to hold said engaging wheels in clutchengagement, and afinger-piece to release said engagement.

43. The combination with a platen and a line-space wheel, of aconnecting train comprising a gear concentric with the platen axle andpinions eccentric to said axle, one of said pinions being movable with,the platen, a clutch composed of engaging wheels respectively carried bysaid pinions and movable therewith into and outof clutch engagen'ientmeans to hold said ongaging wheels in clutch engagement, and afinger-piece to release said engagement.

4%. The combination with a platen and a line-space wheel, of aconnecting train comprising a gear concentric with the platen axle andpinions eccentric to said axle, and a clutch composed of engaging wheelsre spectively carried by said pinions and movable therewith into and outof clutch engagemcnt, said engaging wheels having respectively greaterperipheral speed than the pinions by which they are carried.

45. The combination with a platen. and a line-space wheel, 01 aconnecting train comprising a gear concentric with the platen axle andpinions eccentric to said axle, one of said pinions being movable withthe platen, and a clutch composed of engaging wheels respectivelycarried by said pinions and movable therewith into and out of clutchengagemenh, said engaging wheels having respectively greater peripheralspeed than the pinions by which they are carried.

46. The combination with a platen and a line-space wheel, of a clutchcomprising engaging wheels normally in operative connection, saidengaging wheels being operatively connected. with the line-space wheel,one of said engaging wheels also having a fixed position in relation tothe platen for the united movement of said platen and line-space wheel,and means for disconnecting said engaging wheels to render the clutchinoperative and permit relative movement between the platen andline-space wheel.

47. The combination with a platen and aline-space wheel, of a clutchcomposed of engaging wheels normally in operative engagement, saidengaging wheels having gears engaging the line-space wheel, and one ofsaid engaging wheels also having a position in fixed relation to theplaten for the united movement of said platen and linespace wheel, theengaging wheels at their point of clutch engagement having greaterlineal speed than said gears at their point of engagement with theline-space wheel,

7 ing devices.

and means for releasing the clutch engagement, to permit relativemovement lDB- tween the platen and line-space wheel.

18. Ellu combination with a platen ands line-space wheel, of a clutchcomposed of engaging wheels normal in operative co'n necticn, s 1 wheelsalso having gears in engo gcrnent wini the line-space Wheel, and one ofsaid engaging Wheels having 2, position in fixed relation to the platenfor the united movement of said platen end line-space Wheel, the pointof clutch engagement, between engaging wheels being more discent fromthe axes of said nneels than are the points of engagement gears with theline-space Wl'l'SQl.

d9. The combination of a platen, a train comprising a gear, a pinion, anengaging Wheel connected to said pinion of larger diam t er the pinion,an engaging device coop ere with said Wheel to oppose the rotation ofthe pinion, and a line-space wheel connected to said platen by saidtrain. 50. The conihinntlonot o platen, a train comprising a gear, apinion, an engaging wheel connect-e l to said pinion and larger diameterthan the pinion, an engaging de "ice cooperating with said Wheel tooppose the rotation of the pinion, e line-space wheel connected to saidplate by said train, and a finger-piece connected to means to releasesaid pinion from tile control of said engog ing device, to permitrotation of the platen independently ol'; the line-space Wheel.

The combination oi :1 platen, 2i train comprising a gear, a pinion, anengaging Wheel connected to pinion and of larger diameter than thepinion, =1 pair or devices engaging paid engaging wheel to cooperate"herewith to prevent rotation of 1i d pinion, and a linc-spece Wheel,said pl'ntrn and linespacc wheel connected ov said troin.

52. flhe combination oi a platen, a train comprising gear, a pinion. anengaging wheel connected to said lion and of larger dizn'netcr than the.mion, a, pair of derccs engaging said engaging wheel to cooperatetherewith to prevent rotation of said piniongn line-space Wheel, saidplaten and line-space wheel connected by said train, and means torelease said pinion from the opposition of said pair of engag- Thecmnhinu'tion of a platen, :1 train comprising 1. gear, a pinion, anengaging wheel connected to said pinion andof larger dimnetcr than thepinion, pair of devices engaging said engaging wheel to cooperatetherewith to preventrotntion of said pinion, and a line-space wheel,said platen and line-space Wheel connected by said train, said pair ofengaging devices being connected to said gear to be rotated thereby.

54. The combination with a rcvoluhle train of mechanism comprising aplaten and e platen-driving shaft, of n train of mechanism comprising agear concentric with said'shaft, an arm rerolnhle about said shaft,pinion carried by said arm meshing" with said gear, an engaging wheel onsaid pinion, means to engage seid engaging Wheel to oppose the rotationthereof, a line-space wheel connected to said shaft said train, andmeans to release said en- Wheel.

$36. The: combination with a revoluhle platen and a platen-drivingshaft, of a train of mechanism comprising a gear concentric with saidshaft, an arm re'volnble with said shaft, a pinion carried by sold ownand meshing with said gear, on engaging wheel on s-iid pinion, a secondarm rotatable about said shaft, a pinion carried by said second arm andin mesh with said gear, an engaging wheel carried by said second pinion,means to press said engagin; wlwels together to oppose the rotation Ytl'ui'col', and a line-space Wheel connected 0nd 2117111 r0 itlble aboutsaid shaft, a pinion carried by iltl scroznl arm and in m, an engagingWheel carried by said cond pinion. means to press said engaging wheelstogether to oppose the rotation thereof. 1 line-space Wheel connected tosaid shalt by-saidtrziin, and means for ef-- l ecting relative nxm'emntof said arms to separate said engaging wheels from each other Thecombination with a revoluhle platen and n platen-driving shaft, 0f strain. of mechanism comprising a gear concentric with said shaft, an armrevolnble with said shaft, a pinion carried by said arm and meshing withsaid gear, an engaging Wheel on said pinion, a second elm ro tetnilleshout said shoft,a pinion carried by said second arm and in mesh'withsaid gear, an engaging wheel-carried by said second pinion, a third armmounted to rotate about said shaft, an engaging Wheel on said thirdsrre,.means to press all of said mesh with Still engaging wheelstogether to oppose the to tation thereof, and a line-space wheelc0nnected by said train to said platen.

59. The combination with a revoluble platen. and a platen-driving shaft,of a train of mechanism comprising a gear concentric with said shaft, anarm revoluble 'ith said shaft, a pinion carried by said arm and meshingwith said gear, an engaging wheel on said pinion, a second arm rotatableabout said shaft,a pinion carried by said second arm and in mesh withsaid gear, an engaging wheel carried by said second pinion, a third armmounted to rotate about said shaft, an engaging wheel on said third arm,means to press all of said engaging wheels together, a line-space wheelconnected by said train to said platen, and means to separate theengaging wheels to permit the rotation of the platen and line-spacewheel.

The combination with a revoluble platen and a platen-driving shaft, of atrain of mechanism comprising a gear con centric with said shaft, an armrevoluble with said shaft, a pinion carried by said arm and meshing withsaid gear, an engaging wheel on said pinion, second arm rotatable aboutsaid shaft, a pinion carried by said, second arm and in mesh with saidgear, an engaging wheel carried by said second pinion, means to presssaid engag ing wheels together, and a line-space wheel connected to saidshaft by said train, each of said engaging wheels being of greaterdiameter than its pinion.

(51. The combination with a revoluble platen and aplaten-driving shaft,of a train of mechanism comprising a gear concentric with said shaft, anarm revoluble with said shaft, a pinion carried by said arm and meshingwith said gear, an engaging wheel on said pinion, a second arm rotatableabout said shaft, a. pinion carried by said second arm and in mesh withsaid gear, an engaging wheel carried by said second pinion,means topress said engaging wheels together, a line-' space Wheel connected tosaid shaft by said train, each of said engaging wheels being of greaterdiameter than its pinion, and means for effecting relative movement ofsaid arms to separate said engaging wheels from each other.

62. The combination with a revolnble platen and a platen-driving shaft,or". a train of mechanism comprising a gear concentric with said shaft,an arm revoluble with said shaft, a pinion carried by said arm andmeshing with said gear, an engaging wheel on said pinion, a second armrotatable about said shaft, a pinion carried by said second arm and inmesh with said gear, an engaging wheel carried by said second pinion, athird arm mounted to rotate about said shaft, an engaging wheel on saidthird arm,

means to pressall of said engaging wheels together, and a line-spacewheel connected by said train to said platen, each of said engagingwheels being of greater diameter other, and means operable manually todisengage said inter-engaging means and thereby disconnect theline-space wheel and platen while the latter is in any rotativeposition.

64. The combination with a revoluble platen and a linespace wheel, of atrain connecting them and comprising a gear, a pinion meshing therewith,a companion pinion meshing with said gear, inter-engaging meansconnected to said pinions for enabling each to oppose the rotation ofthe other, and a. finger-piece operable to manually efl'ect releasebetween said pinions while the platen is in any position of rotation.

65. The combination with a platen and a linespace wheel, of normallyoperative locking means comprising a train of planetary gears carried inpart by said platen and in part by said line-space wheel, and means tolock said train; and means carried by the platen for rendering saidlocking means inoperative in any rotative position of the platen.

66. The combination with a platen and a line-space wheel, of anintermediate locking train comprising elements connected to the. platenand line-space wheel for relative rotation when the platen andline-space wheel are relatively rotated, said elements normally inoperative meshed engagement preventing relative rotative movement ofsaid wheel and platen, and means movable with said platen operative inany line-space position of said platen to release said train from itsoperative engagement and permit individual movement of said platen.

67. The combination of a train comprising a gear, a pinion meshing withsaid gean, interengaging means for opposing the rotation of said pinion,said pinion and said interengaging means mounted "to revolve bodily withsaid pinion, manually operable means to disengage said interengagingmeans, and a pl'aten and line-space wheel connected by said train, saiddisengaging means operable to disconnect the line-space wheel and platention of said pinion, said pinion and said interengaging means mounted torevolve bmhly with said pinion, manually operable means to disengagesaid interengaging means, a platen and lmespace Wheel 'connccted by saidtrain, and means for releasmg said pinion from the control of sadmterengagmg means lndependenily of the

